A rotary drilling machine reaming control method, a reaming drill bit, and a rotary drilling machine
By coordinating the axial movement of the rotary drilling rig's drill bit and the action of the hole-reaming component to satisfy the preset functional relationship, the problem of rotary drilling rigs being unable to drill complex holes has been solved, enabling hole reaming of multiple shapes, expanding the application range and improving the bearing capacity of piles.
CN121296041BActive Publication Date: 2026-05-05SUNWARD INTELLIGENT EQUIP CO LTD
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Patent Information
- Application Number
- CN202511866874.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-05-05
- Estimated Expiration
- 2045-12-11
AI Technical Summary
Technical Problem
Existing rotary drilling rigs are unable to drill holes with complex shapes, which limits their application range and pile design.
Method used
By controlling the coordinated action of the drill bit axial movement drive device, the power head rotation drive device, and the reaming drill bit, the axial displacement of the reaming drill bit and the reaming radius of the reaming assembly satisfy a preset functional relationship, thereby realizing the reaming of complex-shaped holes.
Benefits of technology
It enables the drilling of complex holes of various shapes, expands the application range of rotary bored piles, improves the bearing capacity of piles, and reduces the cost of pile driving.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention discloses a method for controlling borehole reaming in a rotary drilling rig, a reaming drill bit, and a rotary drilling rig. The rotary drilling rig includes a drill bit axial movement drive device, a power head rotation drive device, and a reaming drill bit. The reaming drill bit includes a reaming assembly and a reaming drive device. The method for controlling borehole reaming in a rotary drilling rig includes: when performing non-spiral reaming on a central hole, controlling the power head rotation drive device to rotate the reaming drill bit around the axis of the central hole; controlling the reaming drive device to change the reaming radius of the reaming assembly; and controlling the drill bit axial movement drive device to move the reaming drill bit axially, ensuring that the axial displacement of the reaming drill bit and the reaming radius of the reaming assembly satisfy a first preset functional relationship. By ensuring that the axial displacement of the reaming drill bit and the reaming radius of the reaming assembly satisfy the first preset functional relationship, the reaming meets preset shape requirements. By changing different first preset functional relationships, various reaming shapes can be achieved.
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